Town have agreed a fee with Bristol City for central defender Adam Webster.
It was initially reported that the Blues would receive £5 million for the 23-year-old, however, the Bristol Post says the initial figure is £3.5 million rising to £8 million, presumably after appearance milestones as per the deal which saw Aaron Cresswell join West Ham in 2014.
TWTD understands some of the fee the Blues will receive will go to Webster's former club Portsmouth, who are due a percentage of the profit Town have made on the deal, believed to be 20 per cent.
Webster cost the Blues £700,000 plus Matt Clarke - who is believed to have been valued at £100,000 - when he signed in the summer of 2016.
The defender is at Ashton Gate this afternoon to undergo a medical with the deal looking likely to go through later today.
News that the Robins had renewed their interest in Webster broke last night as a replacement for Aden Flint, who has moved to Middlesbrough for £7 million.
Webster made 48 starts and five sub appearances in an injury-hit spell, scoring one goal.
The money received for Webster gives greater scope for new boss Paul Hurst to pay fees as he looks to add to his squad ahead of the new season, having already signed Trevoh Chalobah on a season-long loan from Chelsea.
As reported earlier, Hurst is in the process of trying to sign free agent former Crawley Town winger Jordan Roberts, while another wideman, a central defender to replace Webster and probably a striker are likely to be among his other targets.
Earlier this week the Blues were linked with a move for Blackpool centre-half Curtis Tilt, while Shrewsbury's Aristote Nsiala, also a central defender, has been mentioned in connection with Town on a number of occasions, although his former boss Hurst played down those reports on Monday.